Quarterly report pursuant to Section 13 or 15(d)

GOODWILL AND INTANGIBLE ASSETS, NET (Details)

v3.7.0.1
GOODWILL AND INTANGIBLE ASSETS, NET (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Dec. 31, 2016
Intangible assets subject to amortization [Abstract]      
Gross $ 24,548   $ 24,548
Accumulated Amortization (4,699)   (4,234)
Net 19,849   20,314
Amortization of intangible assets 465 $ 469  
Intangible assets not subject to amortization [Abstract]      
Gross 26,903   26,903
Accumulated Amortization (4,699)   (4,234)
Net 22,204   22,669
Estimated amortization expense for succeeding five fiscal years [Abstract]      
Remainder of 2017 1,397    
2018 1,861    
2019 1,854    
2020 1,842    
2021 1,842    
Thereafter 11,053    
Emissions Allowance [Member]      
Intangible assets not subject to amortization [Abstract]      
Gross 197   197
Accumulated Amortization 0   0
Net 197   197
Trade Name [Member]      
Intangible assets not subject to amortization [Abstract]      
Gross 2,158   2,158
Accumulated Amortization 0   0
Net 2,158   2,158
Customer Relationships [Member]      
Estimated amortization expense for succeeding five fiscal years [Abstract]      
Remainder of 2017 843    
2018 1,123    
2019 1,123    
2020 1,123    
2021 1,123    
Thereafter 8,710    
Non-compete Agreements [Member]      
Estimated amortization expense for succeeding five fiscal years [Abstract]      
Remainder of 2017 14    
2018 19    
2019 12    
2020 0    
2021 0    
Thereafter 0    
Licenses and Permits [Member]      
Estimated amortization expense for succeeding five fiscal years [Abstract]      
Remainder of 2017 80    
2018 106    
2019 106    
2020 106    
2021 106    
Thereafter 656    
Developed Technology [Member]      
Estimated amortization expense for succeeding five fiscal years [Abstract]      
Remainder of 2017 460    
2018 613    
2019 613    
2020 613    
2021 613    
Thereafter 1,687    
Customer Relationships [Member]      
Intangible assets subject to amortization [Abstract]      
Gross 16,852   16,852
Accumulated Amortization (2,808)   (2,527)
Net 14,044   14,325
Non-compete Agreements [Member]      
Intangible assets subject to amortization [Abstract]      
Gross 94   94
Accumulated Amortization (48)   (43)
Net 46   51
Licenses and Permits [Member]      
Intangible assets subject to amortization [Abstract]      
Gross 1,471   1,471
Accumulated Amortization (311)   (285)
Net 1,160   1,186
Developed Technology [Member]      
Intangible assets subject to amortization [Abstract]      
Gross 6,131   6,131
Accumulated Amortization (1,532)   (1,379)
Net 4,599   $ 4,752
Acquired Indefinite-lived Intangible Assets [Member]      
Intangible assets subject to amortization [Abstract]      
Amortization of intangible assets $ 465 $ 470